Thank you for introducing me this. I found this way is more interesting than using LoadLibrary, but I still prefer to the old method, because it helps me to compile the program even on Windows XP

The documentation link that you provided has some lines in it that I would like to quote here - Quote: Note The MagSetImageScalingCallback function is deprecated in Windows 7 and later, and should not be used in new applications. There is no alternate functionality. Quote: This function requires Windows Display Driver Model (WDDM)-capable video cards. Quote: This function works only when Desktop Window Manager (DWM) is off. For screen capture, look at the following articles - Various methods for capturing the screen[^] Barry's Screen Capture[^] Not sure if this is already mentioned in the articles, but I once captured the screen using the CreateDC API used this way - HDC hdc = CreateDC(_T("DISPLAY"), NULL, NULL, NULL); You then save the device context in hdc to a file. Read here for saving the device context - Converting Device context to images ( PNG , JPEG , BMP , GIF) , Creating PDF & Printing to the Printer[^] Saving (part of) a Device Context as a Bitmap[^] «_Superman_»  _I love work. It gives me something to do between weekends. _Microsoft MVP (Visual C++) (October 2009 - September 2013)

I found a solution: Use a global mouse hook to capture all mouse down event on the screen, and depend on the condition, I can pass this message to the beneath application or destroy it.

I'm using Microsoft Office 2000. When this error occurs, I installed the Office 2000 SP3, but the problem still exists

StringBuilder[^] class RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

I Googled for several of the keywords here and found a number of matches, all speech-related (http://tinyurl.com/tqsk). Most of them were thesis-type papers. I would be inclined to send an e-mail to the author of those papers and explain your situation. I'm feel confident that you'll be obliged. Five birds are sitting on a fence. Three of them decide to fly off. How many are left?